Pistils are composed of three main parts: 1) the sticky top called the stigma, which catches pollen grains; 2) the style, a long neck that connects the stigma and the ovary; and 3) the ovary, in which ovules are produced.
Among the given choices above the correct answer is D. style .Beacause pistil consisting of ovary,pollen stigma etc. therefore styleis not part of pistil.
